Ludwig's Applied Process Design for Chemical and Petrochemical Plants: Volume 2: Distillation, packed towers, petroleum fractionation, gas processing and dehydration by Coker PhD A. Kayode

Author:Coker, PhD, A. Kayode [Coker, PhD, A. Kayode]
Language: eng
Format: mobi, epub
Publisher: Gulf Professional Publishing
Published: 2010-06-09T16:00:00+00:00

Figure 13-36 7-ft-0-in. diameter column – 4 in. caps.

Figure 13-37 8-ft-0-in. diameter column – 4 in. caps.

Cap Layout

Caps should be arranged on the plate in a 60o equilateral triangular layout, with the liquid flowing into the apex of the triangle rather than parallel to the base. The liquid flows are normal to each row of caps.

Cap Pitch Center to Center

Cap sizes 2 in., 3 in., and 4 in.: recommended cap lane distance of 1½ in. (with 1¼-in. minimum, 1¾ inch maximum) plus cap outside diameter. For cap sizes of 6 and 8 in.: recommended cap lane distance of 1½ in (1½-in. minimum, 2½-in. maximum) plus cap outside diameter.

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